What is virtual constructors/destructors?
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Answer / nk
There is nothing like virtual constructors but we can have
virtual destructors so that the destructor of the correct
object is called.
Ex.
Base *bptr = new derived()
delete bptr; then the destructor of the derived objetc is
called when the base destructor is marked as virtual.
else destructore of base class is called and may lead to
memory leak if we have allocated any new memory.
| Is This Answer Correct ? | 18 Yes | 1 No |
Answer / debasish
there is no virtual constructor..coz..virtual thing is in
run time n constructor ic compile time thing.
| Is This Answer Correct ? | 15 Yes | 3 No |
Answer / syed abdul gaffur.
CONSTRUCTOR:
Constructors cannot be virtual. Declaring a constructor as a virtual function is a syntax error.
DISTRUCTOR :
If an object (with a non-virtual destructor) is destroyed explicitly by applying the delete operator to a base-class pointer to the object, the base-class destructor function (matching the pointer type) is called on the object
| Is This Answer Correct ? | 7 Yes | 0 No |
Answer / khadeer.k
virtual constructors are used when we need to avoid the
copy same. desructor frees the memory with a ~(tilde) symbol
| Is This Answer Correct ? | 8 Yes | 9 No |
Write a program to compute for numeric grades for a course. The course records are in a file that will serve as the input file. The input file is in exactly the following format: Each line contains a student's first name, then one space, then ten quiz scores all on one line. The quiz scores are in whole number and are separated by one space. Your program will take it input from this file and sends it output to a second file. The data in the output file will be exactly the same as the data in the input file except that there will be one additional number (of type double) at the end of each line. This number will be the average of the student's ten quiz scores. Use at least one function that has file streams as all or some of its arguments.
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